.dropdown-submenu {position: relative;}
.dropdown-submenu>.dropdown-menu {top: 1px;left: 100%;margin-top: -3px;margin-left: -1px;
-webkit-border-radius: 0 6px 6px 6px;-moz-border-radius: 0 6px 6px;border-radius: 0 6px 6px 6px;}
.dropdown-submenu:hover>.dropdown-menu {display: block;}
.dropdown-submenu>a:after {display: block;content: " ";float: right; width: 0;height: 0;border-color: transparent;
border-style: solid;border-width: 5px 0 5px 5px; border-left-color: #000;margin-top: 5px;margin-right: -10px;}
.dropdown-submenu:hover>a:after { border-left-color: #fff;}
.dropdown-submenu.pull-left {float: none;}
.dropdown-submenu.pull-left>.dropdown-menu {left: -100%;margin-left: 10px;-webkit-border-radius: 6px 0 6px 6px;
 -moz-border-radius: 6px 0 6px 6px;border-radius: 6px 0 6px 6px;}